Occupying just 1.3 in.3, the PowerBlock micro-miniature modular switching power supplies accept input voltages from 90 Vac to 260 Vac from 47 Hz to 440 Hz and deliver up to 5W of output power. Designated the PWB Series, the supplies are fully encapsulated with pins for circuit-board mounting. Features include a line/load regulation of ±0.5% typical, I/O isolation up to 3 kVac, output ripple/noise of 150 mV p-p, an efficiency of 75 to 85 at full load, and an operating temperature range from -25ûC to 71ûC. Prices start at $12 in OEM quantities. ASTRODYNE, Taunton, MA. (800) 823-8082.
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